Table 1 Demographic, clinical, and echocardiographic parameters. IQR: interquartile range. LV: Left ventricle. LVEF: Left ventricular ejection fraction. RV: Right ventricle. TAPSE: Tricuspid annular plane systolic excursion. TR Vmax: Maximum tricuspid regurgitation velocity

Age, years [IQR]

59 [51, 66]

Female sex, n (%)

33 (31%)

Body mass index, [IQR]

27.3 [23.6, 31.6]

Mechanically ventilated, n (%)

• Positive end-expiratory pressure, cmH₂O [IQR]

• Tidal volume, ml [IQR]

63 (58%)

• 8 [7, 10]

• 460 [400, 516]

Mortality, n (%)

49 (45%)

FiO₂, [IQR]

0.50 [35, 63]

PaO₂, kPa [IQR]

9.8 [8.4, 11.9]

PaCO₂, kPa [IQR]

6.0 [4.7, 7.4]

pH, [IQR]

7.39 [7.31, 7.45]

Base excess, mmol/l [IQR]

0.8 [-2.9, 6.2]

Respiratory rate, [IQR]

24 [20, 30]

PaO₂/FiO₂ ratio, [IQR]

20.50 [14.44, 32.04]

Mean arterial pressure, mmHg [IQR]

77 [67, 90]

Norepinephrine support, n (%)

37 (34%)

Norepinephrine dose, mcg/kg/min [IQR]

0.13 [0.06, 0.31]

Heart rate, bpm [IQR]

90 [77, 105]

LVEF, % [IQR]

55% [55, 62]

LV significantly dilated, n (%)

4 (3.6%)

TAPSE, mm [IQR]

21 [18, 24]

RV significantly dilated, n (%)

37 (34%)

TR Vmax, m/s [IQR]

2.9 [2.2, 3.1]